My girlfriend is allergic to antibiotics and has chlamydia are there alternative treatments?

No, needs Meds: Antibiotics are the only way to cure this infection, no alternative treatments are available. It is highly unlikely your girlfriend is allergic to all antibiotics. There are a number of different medications that have very good activity against Chlamydia including doxycycline (a tetracycline) and azithromycin (a macrolide). See Allergist if concerned. Practice safe sex, wear a condom.

More than one: It is a rare individual that would be allergic to all the antibiotics that can treat chlamydia. I would have her chec with her doc about options.